Pressure regulator



pelis. 1925. g `1,525,426

y P. MUELLER ET AL PRESSURE REGULATOR Fled Dec. 14, 1922 31a/uente@ PM740 Mae//e/t /4/770/7 15C/Maman@ fraaie Fa. 3, l1925. A 1,525,426'. UNITEDY" srrnrss PArEN'tUoFFicr-z. y

PILIP M/UELLER AND ANTON C. SCHUERMANN, OF DECATUR, ILLINOIS,` ASSIGNORS TOYADOIFH MUIE'LEB, TRUSTEE, 0F DECATUR, ILLINOIS.

t rnnssunn lammeren.

' application aged beoember 14,4922. serial No. coessa.

To all'whomz'tmaz/ cof/wem.' Referring tothe drawings wherein is dis- Be it known that PHILIP MUELLER and Aclosed 'a preferred embodiment of the in-` 55 ANTON C. Seltmann-mir, citizens'` of thle vention, y v United States, residin at Decatur, inthe Figure 1 is a diagrammatic view show- 5 county of-Macon and tate of Illinois, have ing the invention connected with an inclined invented new and useful Im rovements in stream drinking fountain. V Pressure Regulators, 0f WBG the follow-I "Figure 2is a vertical sectional view of the 60 ing is a specification. regulator. y This invention relates to1 fluid ressure Figure 3 is a detail view of thevalve stem l regulators for reducing and control ingl the and its associated parts.

pressure of fluids,'and more 'particularly to Referring to the accom anyi drawings a construction in which meansautomatiwherein .like numerals in lcate li e parts 1n 65 cally controlled by the pressure in the reguthe various figures, land more part1cularly lator is connected tora valvestem havin `a to Figure 1,- 10 denotes the .body ofy a fliuid 16 communicating passa-ge therein, for equa izpressure regulator which is connected by ing or vbalancmg the pressure'that actuar/es the outlet pipe 11 to an inclined nozzle in the valve. l the drinking fountain 12. A stop cock 13 is 70 One o-f the essentialv features of this inositioned on the pipe 11 for connecting and vention resides in roviding a communica.t' Jgisconnecting the ,su ply to the fountain 12.

y 2Uring port between t e intermediate hamber The regulator 10 1s provided with the inand outlet, which is.of lessA area t an, the let 14, an outlet 15, and alo-w prescure opening between ,the inlet and intermediate chamber 16, which arese arated from each75 chamber. in order that ares nsive' and sen' other by the partition 17 avinga( centrally sitive means ma'y` be utilizeoto com nsate Idisposed opening that forms a. valve seat 18.

for any sudden variation in the elivery on the lower surface f the artltion. 17.

pressure, and accurately meinten, the `out' The outlet 15 is separated rom the chamlet How uniform and constant. )l ber 16 by the partltion 19 which is pro- '80 While the ordinary type of pressu'rereguvided with a port or opening 20 for estab- .-at'or is suitable for delivering pressure to lishing Ia direct communication between :ra outlets positioned in a horizontal Aor vverti-` these parts. In order that the accurate func cal plane, they have been foundrdeicient in tion of the pressure regulator may be effectsupplying 'water lto ya. drinking fountain in ed, the port 2O is of much smaller/diameter 95 which the nozzle is positioned on an incline, than the valve opening 18 positioned between since they are not suiiiciently sensitive to the yinlet 14.- and chamber 16. By reason of properly regulate the supply when so anfthe articular size of the port 20, it is pracgularly positioned.- j tica y impossible for the low (pressure in In order to overcome the inherent ,defects thechamber 16 to fall suddenly, since the re- 9o prevalent in the common form of pressure stricted openingof the port 20 prevents theA regulators whenr the sup-ply has to be de water from quickly assing to the outlet 40 livered to an inclined outlet, we have dey15, and thus the posslbility of seriously r`e- "vised an installation for so regulating the ducing the ressure in the chamber 16. is

pressure of viratai delivered 'to a drinking precluded. ghould, on the other hand, the 95 fountain of this type, which positively inhigh pressure in the inlet 14: increase,

suresa. uniform and constant delivery to the as it quite often does from various'causes,

outlet. and which is adapted to automati the pressure maintained in the chamber cally compensate -for any sudden variation ,16 will immediately respond to close the P 'n the initialfpressure, thus precluding the port 18. Depending fromI the bottom of the 100 possibility of the flowv spurting over the regulator there is 'provided a.cylindrical edge of the bowl when the pressure-sudextension 21 whicli is internally threaded so l denly increases, and equally maintaining a as to engage the correspondingly exterior ,suiicient supply when the pressure falls bethreadsl on the recessed plug 22. .I

low the point to which the stream has been f A valve stem A23 extends through the open- 105 adjusted. .T ff f ing 18 in the partition 17'1and is provided lintermediate its ends with an annular flange 24, which closely fits theopenling 18 and serves as a preliminary valveto throttle the flow before/the main valve seat is opened so as to prevent Water hammering of the parts. l 5 A P The lower portion of vthe, stem below the collar 24 is of smaller diameter ,than the collar and iscxteriorlyA threaded so asto engage the sleeve 25. This sleeve has an enlarged upper end. provided'with a' recess for receiving .a flexlble seat-washer- 26, that V is adapted to be brought into contact with ably ,by the'washer'30 and the nut 31.q .The

r cup portion of the pistonV 28 is arranged to be in communication with the inlet 14 so that the initial .or' inlet pressure will' tend to ex andthe wall of the piston radially,l thus heeping it in tight contact with the wall of the cylinder 28, and at the same tile forcing the piston downward to move t e washer 26 away from the valve seat 18. f

In order to rovide a communicating lpassage between t e chamber 16 and the cylinder 29, the stem 23 is formedawith a vertical '5o sides of, the washer 26": and-I the the iston with the walls ofthe cylinder.

duct, 32 which is connected to the chamber 16, by the lateral' duct 33, so as to uniformly 'distribute the pressure on both sides of the valve.

.The piton sais slightly Smaller in diameter than the valve seat 18 in order to allow a preponderance or the inlet pressure against the underside of the valve washer 25, whichl will-tend to close the valve.- While the effective force of 'the inlet pressure against the valve washer 2 5y and the piston 27 ,will not ,be uniform, the construction ofthe regulator is such that the force ofthe delivery or back pressure lagainst the ,respective opposite y iston 27 is practically equal. It 'will be furt er'noted that the diameter of'` the valve seat .openinl' is slightly less than that of the piston 2 so as to permit the frictional engagement of e upper end `of the valve steml 23 vis provdd withX an .enlarged shoulder 34, which' is in slidable contact with 'the 'rn' wardly projecting guide lugs 35 formed integralwith the chamber 16. Attached to the shoulder 34 is a reduced extension 35- having an enlarged 'head 36 adapted' to loosely fit in a T-shaped slot 37 formed in the head of the threaded bolt .38. ,t

which Y ro' above the the stem'through the opening'18, and. also provides a fluid passageway frm the inlet 14 to the low pressure chamber 16. c,

A flexible diaphragm 40 is clamped between a reduced portion of thc bolt 38 and va friction washer41 `l) the nut 42 as 'show n. The outer margina edge of' the diaphragm 40 is provided with an annular rib 43, which 1s interposed between' the annular projection-or rib 44 `formed in the outer surfaces ofthe enlarged flange 45 ony the body 10. and a metal washer 46, so as tosecure anon-slip joint `detween the assembled parts y 1 A closure'cap 47 is rovided with an euf larged end fiange48 w ich isthi'cadedly sccured to the flange 45 as shown. ,v

The closure cap 47 has arranged interiorlj, thereof a pair of diametrically'opposed -ribs 49 whichl engage recesses formed ect upwardly a short-distance in the pressure'button 50 s o as to maintain the latter against rotation. Interposed be tween the button 5.0Jand the nut 42 is the compresslon sprln 51 which is maintained vin concentric position with respect to the bolt 38 bythe reduced extension 52 and the nut. 42.

. Extending through im ofthe cap- 47 is an adjusting screw 53 whic is in threaded engagement lwith the button v `and is provided at its lower end with a particular .arrangement 'of the( adjusting v screw 53, that: all necessary adjustments of the delivery pressuremay be made without moving the screw 1n a lengthwise direction.

4thus enabling theluse of a close fitting and -removable'housing for the regulator. l

The present col'lstruction differs materially from t e ordinary typeof lpressure regulator,` vsince` in the latter'4 .the upper end .of the lay-pass is adapted 'tiopen into ,the outlet jchax'nlier, .while in `the'present development fin. which the small outlet ployed, it is necessary that t e upper end of; theib -passage`42open into the low pressurel cham r 16 so that the pressure in 'the ou` will be much less than the pressure in the.

polycgonaltool engaging head-54. The out' A`Thestel 23'is further'provided with :D plurality" of radially` extending ribs 39,

ange 24 and serve as guides-for preferably l opening in the to i les - letchamber when the stop cock 13 is open Y chamber 16.` As the pressure in the chami ber 16 acts against the under side `ofthe valveseat 26, it is! essential that this same pressure be exerted against the, lower end.- of the piston 28 in order that the force of the low pressure against each sidef'of'the valve seat 18V, will he equalized.

It will be seen that by reason of the pre-s ent construction Aa very sim le and inexpensive tregulator is provide( in whichl the various parts may be very expeditiously assembled or disassembled and new'clements applied for those whichhad become worn out through usage. In order to dismantle the regulator it is merely necessary to remove the closure can 47- from the flange 45 and disengage the diaphragm from its loose unscrewed from engagement with tbe stemof the nut 38.

The operation of the devicet'is as follows: Assuming that the adjusting screw 53, previously described has been turncd'to the right until the pressure button 50 is in a position in which the spring is distended, and

no pressure is exerted upon the diaphragm 40, and the valve washer 26 is away fromits seat, a small quantlty ot' water will be conducted. from the inlet 14 through the opening 18 into the low pressurel chamber 1G where it will be delivered out tlu'ouglrtl'lc ducts 33 and 32 into the cylinder Qt) back of the flexible piston 28, the air in the cylinder 29 being forced through the ducts 32 and 33 in the chamber 16. When the chamber 16 and the cylinder 29 becomel filled .vith Water the pressure will force the diaphragm 40 upward. thus drawing the seat washer '26 into contact with the valve seat 19 and cloaing the valve. The adjusting screw 53 by means of a wrench or other suitable. tool Will then be turned to the left, causing the button 50 to move downwardly thereby cxerting pressure' on the diaphragm ft() through the tensioning of ,the spring '51. The downward pressure exerted b v theI spring 51 tends to overcome the rip-wardY pressure exerted by they diaphragm, thus forcing the valve washer 26 away 'from its,

seat-so as to ermit the entrance ot water into the cham er 16.

At this point the stop cock 13 shown in Iigure 1 may be open so as to see it the drinking stream of the Yfountain 12 is ot" `sutiicient pressure.' It the stream still too weak the screw 53 will be. further turned tothe left so as to increase theI` pressure on the diaphragm, which lmechanical pressrre tends to overcome the resistance of the hydraulic pressure acti-ng againsty the under side of the diaphragm. When the `desired pressure has been obtained the valve' washer 26 will be automatically forced to its seat each time the delivery or back pressure from the inlet V14 exceeds in the slightest degree the point at which the drinking stream was found to be satisfactory. Thus, it will be seen that-the supply will be maiutaiuedfin' a uniform How irrespective of the tiuctuagtions in the inlet or initial pressure.

. While the form of the invention herewith shown and described is shown in connection with adrinking fountain, it is to be understood that it may be uscdwith other installations in which aclose regulation ot' fluid pressure is required, and that such minor changes in construction and arrangement of parts that tall within the purview the apended claims may be made without departln from the spirit of this invention.

e claim:

1. A regulator having an inlet, a port connect-ing said inlet with a chamber. a valve :for said port, pressure controlled means to actuate said valve, an 4outlet from said chamber of less area than the inlet. and means for balancing the valve including a passage extending through the body thcreo't'.

2. A regulator having an inlet` a port connecting said inlet with 'a chamber. au

youtlet from said chamber of less area than the inlet, a valve for saidv port, and pressure controlled means to actuate 'the"valve, the stem of the valve being tubular and serving to conduct pressure from said chamber to the opposite side ,lof the valve to balance it.

.3. A regulator having an inlet. a port connecting said inlet with a chamber, a valve for said port, pressure controlled meansin said chamber to actuate. the valve, an outlet from said chamber of less area than the inlet, a piston connected to the valve onlthe opposite side thereof from 'said pressure controlled means, and means for conducting pressure from the chamber to the face of the piston remote from the valve including a passage through the valve body;

4. A regulator having an inlet. arport connecting said inlet with a chamber. a valve for said port. a spring pressed diaphragmin saidchamber and connected with less area than the inlet, a. piston connected With the valve on the opposite side thereof from said diaphragm, and means for c'onducting ressure trom the chamber tothe face oftiie piston remote from thel valve in.- cluding a passage through the valve body.

5. A regulator having an inlet, a port connecting said -iulet with a chamber, a valve stem traversing said port` ay valve for controlling thc flow through said v'iort secured to the intermediate portion o said stein. pressure controlled means detachably sccured to one end ot' said stem' for actuatintl said valve. a piston connected to the other end ot said stem, and a passage in said stem extending from said chamber to said piston.

6. A regulator having an inlet, a port connecting said inlet with a chamber, a valve stem traversing said port, a valve for controlling the 'flow through said port remov ien' abl isecured to the intermediate portion of said stein, pressure controlled means detachably secured to one end of said stein for actuating said valve, a piston connected to thel other end of saidstem, a assage in said stein extending from said ciamber to said piston, and an outlet in lsaid chamber of less area than said inlet. .i

7, .A regulator having an inlet; a port connecting said inlet with a chamber, ,a cylinder beneath said chamber, a valve .stem traversing said ort, avalve for controlling the flow t'lirouglli said port secured lto the intermediate portion of said stem, pressure controlled means in said chamber detaclr ably connected to one end et lsaid stem, a piston in said cylinder attached to the oppo" site end of said stem, andan outlet from said chamber of less area than said inlet.

8. A regulator having an inlet, a port connecting said inlet with a chamber, a cyl-A inder beneath said chamber, a valve stem traversing said Ilort, a valve for controlling the flow throng Said porty secured to the intermediate portion of said stem, pressure controlled means in said chamber detachably connected to one endotsaid stein, a piston in said cylinder attached to the opposite end of said stem, a passage in Isaid stem extending from said chamber to. said cylinder, and an outlet from said chamber of less area thanL said inletf t J 9. A regulator having an inlet, a port connecting said inlet, with a chamber, a cylinder removably secured to said regulator1 a valvestem traversing said port, a valve for controlling the flow .through said port connected to the intermediate portionfof said stem, pressure controlled means detachably secured to one end of said stem, a piston in said cylinder attached to the/.o 4posite end of said stem, a assage in said c amber extending from said chamber to said cylinder, an outlet from said chamber of 'less area than saidinlet, and fneans in said ch'aiiiber` for adjusting the pressure on saidpressure controlled means. Y

10. A pressure Iregulator com rising a body havingan inlet, an outlet, an an intermediate ch'ainb'er, a port connectin said inlet with said chamber, a cylinderI etachably connected to said body, a valve stein traversing said'port, a valve for said port connected to the/intermediatemortion of'said stein, a cap removably secured to`said chambei', a yieldable diaphragm connected to one end ofssaid stem, and al piston to the other end thereof, a passage in said stem exf tending'from said chamber to saidA cylinder,

an opening connecting said outlet with said chamber, said opening being of less area than said port, and com ression means in said cap engaging said liaphragm.

11. pressure regulator comprising abody havingaa'n inlet, an outlet, and an 65 intermediate chamber, a port connecting said inlet with saidehamber, acylinder detachg Jably 'connected to Said body, a valve stem traversin1r said ort, -a valve for said port connectedD to the intermediate stem, a cap removably secure tosaid cham ber, a yicldable diaphragm connected to one end of said stem', and a cup piston to the f y other end thereof, a passage in said stein l(intending from said'chamber to said cyl- 75 inder, an

l ening connecting said outlet with said chaml er, said opening beine of less area than said port, a pressure button in said cap, a spring interposed between said button'fand diaphragm, and an adjusting 80 screw engaging said but-ton and projecting through an opening in said cap.

12. pressure regulator comprising a .y body having an inlet, an outlet,n and an intermediate chamber, a port connecting said said chamber, a yieldable diaphragm connected to one end of said stem, and a piston to the other end thereof, a passage in said stem extending from'saidchamber vto said cylinder, an opening connecting'said outlet with said chamber, said opening being ot a5 less area than said port, a ressure button, guides in said-cap for sai button, a coil spring interposed between said diaphragm Y and button, and an adjusting screw engaging said button and projecting through an lnt openin in said cap.- 13. pressure regulator comprising a .body having an inlet, an outlet, and an intermediate chamber, a port connecting said inlet with said chamber, a cylinder detzicliins ably connected to said body, a `valve stem traversingsaid body, l'a valve for said port connected to the intermediate portion of said stem, a vflexible vdiaphragm in said .chamber removably secured to one endof said stein, 110

a piston in said cylinder connected to the opposite end otl the stem, means in ,said c amber for guiding said stem. a passage in saidstem extending from said chamber to said cylinder` an opening connecting said outlet with said chamber of less area than said port, a c-ap detachably connected to said, chamber, a Washer between said cap and diaphragm provided with means for non? rotatably securingthe latter to the body, 220

and means in said cap foradjusting tho fpressure on said diaphragm,

In testimony whereof we have hereunto set our hands..

PHILIP MUELLER. ANTON C. SCHUERMANN.

ortion ot said -70 

